Breakfast Omission Reduces Subsequent Resistance Exercise Performance

Mohamed Nashrudin Bin Naharudin; Ashril B. Yusof; Harry Shaw; Matthew Stockton; David J. Clayton; Lewis J. James

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Breakfast Omission Reduces Subsequent Resistance Exercise Performance

Mohamed Nashrudin Bin Naharudin ^[1] ; Ashril B. Yusof ; Harry Shaw ^[1] ; Matthew Stockton ^[1] ; David J. Clayton ; Lewis J. James
1. [1] Loughborough University
  
  Loughborough University
  
  Charnwood District, Reino Unido
Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 33, Nº. 7, 2019, págs. 1766-1772
Idioma: inglés
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Resumen
- Although much research has examined the influence of morning carbohydrate intake (i.e., breakfast) on endurance performance, little is known about its effects on performance in resistance-type exercise. Sixteen resistance-trained men (age 23 +/- 4 years, body mass 77.56 +/- 7.13 kg, and height 1.75 +/- 0.04 m) who regularly (>=3 day/wk-1) consumed breakfast completed this study. After assessment of 10 repetition maximum (10RM) and familiarization process, subjects completed 2 randomized trials. After an overnight fast, subjects consumed either a typical breakfast meal (containing 1.5 g of carbohydrate/kg; breakfast consumption [BC]) or a water-only breakfast (breakfast omission [BO]). Two hours later, subjects performed 4 sets to failure of back squat and bench press at 90% of their 10RM. Sensations of hunger, fullness, desire to eat, and prospective food consumption were collected before, as well as immediately, 1 hour and 2 hours after BC/BO using 100-mm visual analogue scales. Total repetitions completed were lower during BO for both back squat (BO: 58 +/- 11 repetitions; BC: 68 +/- 14 repetitions; effect size [ES] = 0.98; p < 0.001) and bench press (BO: 38 +/- 5 repetitions; BC: 40 +/- 5 repetitions; ES = 1.06; p < 0.001). Fullness was greater, whereas hunger, desire to eat, and prospective food consumption were lower after a meal for BC compared with BO (p < 0.001). The results of this study demonstrate that omission of a pre-exercise breakfast might impair resistance exercise performance in habitual breakfast consumers. Therefore, consumption of a high-carbohydrate meal before resistance exercise might be a prudent strategy to help maximize performance.